Vitamin Q&A

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Q. I read in your column a question from a mother whose child had recurrent ear infections. When my son was young, decades ago, he had lots of ear infections too. I finally took him to a specialist who said... (Read More)
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Q. I have had psoriasis for more than 35 years. A few years ago, my doctor suggested vitamin D, as my blood level was low. Much to my surprise, my psoriasis began to disappear almost immediately. Several patches had proved... (Read More)
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Q. Months ago I heard about the benefits of vitamin D. I ran an experiment on myself and found that a persistent pain in my back went away after I took 2800 IU of vitamin D three times. Now a... (Read More)
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Q. About five years ago, I began to suffer severe pain in my left hip and leg. It was agonizing when I lay in bed. I had to crawl on my hands and knees to climb stairs. Physical therapy did... (Read More)
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Q. I take a multivitamin after breakfast. I notice that my urine turns bright yellow for several hours afterwards. What causes this change in color and is it dangerous? A. Riboflavin (vitamin B2) can color urine an almost fluorescent yellow.... (Read More)
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Q. Is it true that calcium from supplements can build up in the arteries, causing heart problems? Would calcium from plant sources do the same thing? A. The most recent research on this issue comes from Germany. Nearly 24,000 subjects... (Read More)
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Q. I heard on your radio show a woman who is concerned about irregular heart rhythms after drinking caffeinated beverages. I have trouble with this as well. When I want to drink coffee or tea, I take a combination of... (Read More)
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Q. I have found vitamin B1 to be an effective deterrent for mosquito bites. I was recently in an area where I got multiple mosquito bites daily that itched unbearably. I developed open sores from scratching in my sleep, even... (Read More)
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Q. My vitamin D level is low and my doctor said I should spend more time in the sun. He didn't provide details and I don't like to sit outside in direct sunlight. Is indirect sunlight (under an umbrella) just... (Read More)
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Q. The label on my multivitamin says 400 IU of vitamin D3 is the daily recommended amount. In a recent column, Dr. Oz said men over 60 years old (like me) should take 1,000 IU of D3 daily. A doctor... (Read More)
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Q. My son has Raynaud's phenomenon, which is very painful when it is cold. I heard that eating more bananas and potatoes could help because of the magnesium in them. The mineral is supposed to relax constricted blood vessels. Is... (Read More)

How Much Vitamin D?

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Q. I have read recently that low levels of vitamin D could make people more likely to get cancer. But I have also read that too much vitamin D is dangerous. Can you tell me what is an appropriate amount... (Read More)
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Q. I have reactive hypoglycemia. Though doctors didn't help, a nutritionist did. Eating smaller, more frequent meals of protein and healthy fats, easy on carbs, seems to avert my hypoglycemic symptoms most of the time. My nutritionist recommends a daily... (Read More)
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Q. I currently follow a strict vegetarian diet and consume no animal products at all. Since vitamin B12 is missing from the vegan diet, I wonder how many micrograms of it I should take. I've seen B12 pills of up... (Read More)
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Q. Back in the 1970s I had an attack of kidney stones while on vacation. I was rushed to the hospital, where I was told that at 32 I was young for kidney stones but that they were caused by... (Read More)
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Q. Last October I started having neurological symptoms. My hands were falling asleep every night with pins and needles. The symptoms got worse and I developed pain in my neck, upper back and arms. Sometimes my feet would fall asleep... (Read More)
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Q. I am a retired professor, so what I did for a living for 40 years was talk. It's a paradox because I suffered from stuttering, particularly the 'block' type you get when you have to give a speech. I... (Read More)
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Q. I used to catch lots of colds every year. When I was tested for vitamin D a few years ago, it was really low. I took a lot of vitamin D to get into the normal range. Since then... (Read More)
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Q. Would taking an iron supplement ease RLS (restless legs syndrome) symptoms? I was part of a blinded study at Johns-Hopkins where I either had an iron infusion or a placebo. I was "cured" for over a year, but the... (Read More)

Vitamin C Eased Hives

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Q. I suffered from chronic hives for years without much help from the allergist or the dermatologist. The medicines they prescribed did little to relieve my symptoms and left me in a fog. I was becoming a hermit. Following... (Read More)